donnelly and tammy baldwin and tim kaine, elizabeth warren, chris murphy, maizie orowno, they're all coming to join us in the senate. and along, of course, sherrod brown and bob casey and bill nelson, amy klobuchar, kirsten gillibrand, joe manchin, debbie stabenow, bob menendez, sheldon whitehouse, bernie sanders, maria cantwell, diane finestein, we have delivered to you a great caucus, mr. leader. >> not only did every democratic incumbent in the senate win their race last night, every single one, but democrats actually picked up two seats. elizabeth warren defeated republican incumbent scott brown in massachusetts. joe donnelly defeated tea party favorite, richard mourdock, in indiana. it should have been impossible. joining us now is steve kornacki, co-host of "the cycle," 3:00 weekdays here on msnbc.